American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Having one or more extra sets of chromosomes: a polyploid species; a polyploid cell.
- n. An organism with more than two sets of chromosomes.
- adj. genetics having more than the usual number of complete sets of chromosomes in a single cell
- n. biology a cell or organism that has more than the usual number of complete sets of chromosomes
- n. (genetics) an organism or cell having more than twice the haploid number of chromosomes
- adj. of a cell or organism having more than twice the haploid number of chromosomes
“Wendel 2008 Partitioned expression of duplicated genes during development and evolution of a single cell in a polyploid plant.”
“Incipient polyploid speciation in the maidenhair fern (Adiantum pedatum, adiantaceae)?”
“If the diet was stored initially for 6 weeks following irradiation before being fed to the animals no increase in the number of polyploid cells was noted.”
“When the feeding of the irradiated diet was stopped, the proportion of polyploid cells returned to the control level within a maximum of 6 weeks.”
“Feeding of freshly irradiated wheat resulted in significantly increased incidence of polyploid cells in bone marrow, aneuploid cells in testis, reduction in number of spermatogonia of types A, B and resting primary spermatocytes as well as a higher mutagenic index.”
“One possibility is that the the macronucleus is not well-suited to reproduction, given that it carries a huge number of chromosomes and is polyploid to boot.”
“One of these species is a “polyploid” of the other, that is, it developed from the other species when a chromosomal abnormality left some individuals with twice the normal number of chromosomes.”
“This is why some polyploid plants tend to be larger and have larger cells that the parental species.”
“In diploid or polyploid, sexually reproducing, multicellular organisms, this is a critical source of phentoypic variability between parents and offspring.”
“Incipient polyploid speciation in the maidenhair fern Adiantum pedatum, adiantaceae?”
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